Toyota Hiace engines typically require a coolant that meets the following specifications:
1. Toyota Super Long Life Coolant (SLLC): This is the recommended coolant for Toyota Hiace vehicles. It is a non-toxic, extended life coolant that provides effective corrosion protection and helps prevent scale and deposit formation. It comes pre-mixed with the required ratio of coolant to water and does not require any further mixing.
2. Ethylene Glycol-Based Coolant: If Toyota Super Long Life Coolant (SLLC) is not readily available, an alternative ethylene glycol-based coolant may be used. Ensure the coolant meets the quality standards specified by Toyota, such as SAE J1034 or ASTM D3306. Mix the ethylene glycol-based coolant with distilled water according to the manufacturer's instructions, typically a 50:50 ratio.
3. Never Use Water: It's essential to avoid using water alone as coolant, even in emergencies. Water lacks the necessary corrosion inhibitors and additives to effectively protect the engine cooling system. Using only water can lead to accelerated corrosion, component failure, and serious engine damage.
When to Change Coolant:
Refer to your Toyota Hiace owner's manual for specific coolant change intervals. Generally, Toyota recommends replacing the coolant every 50,000 miles or 8,000 operating hours, whichever comes first. However, it's recommended to regularly check the coolant level and condition to ensure it's within the required levels and free of contaminants.
Ensure you follow the manufacturer's instructions and use the specified coolant to ensure the proper functioning of the cooling system and prevent potential engine damage.
